Tunnel simulation system

Abstract

The utility model discloses a tunnel simulation system, comprising a tunnel main body comprising a first closed section 1, an open section 4 and a second closed section 2 which are arranged in sequence; the release device 17 is positioned at the bottom of the first closed section 1 and is used for releasing flue gas; the axial flow fan 5 is positioned on the outer side of the open section 4 and is used for simulating natural wind outside the tunnel; the monitoring device is arranged on the central axis of the tunnel main body and is used for monitoring the flue gas and the temperature of the flue gas; and the laser polarization source 8 is positioned at the end part of the tunnel main body and is used for monitoring the movement of the flue gas. According to the utility model, through flexible combination and adjustment of the side plates, flue gas diffusion behaviors of the tunnel open section under different environmental conditions can be simulated and monitored.

Description

Technical Field

[0001] The utility model relates to the field of tunnel engineering, and particularly to a tunnel simulation system. Background Art

[0002] Tunnel engineering is an important part of civil engineering. Especially in the construction of modern transportation infrastructure, the design and safety guarantee of tunnels are particularly important. The ventilation and smoke diffusion in tunnels have a direct impact on personnel safety and tunnel operation efficiency. Especially in the open section of the tunnel, the behavior of smoke diffusion is more complex. Therefore, how to effectively simulate the smoke diffusion in the open section of the tunnel has become a key link in tunnel safety design.

[0003] The current tunnel simulation systems mainly simulate smoke diffusion through fixed structures and simple wind speed control. However, there are significant deficiencies in the existing systems: on the one hand, the traditional simulation systems cannot flexibly change the simulation conditions. Especially in the open section of the tunnel, they cannot effectively handle the smoke diffusion under different wind speeds, wind directions, and environmental changes. On the other hand, most of the existing systems lack simulation means for the special structures in the open section of the tunnel, and it is difficult to comprehensively reflect the smoke flow law in this area, resulting in low simulation accuracy in complex environments, and thus affecting the prediction of actual working conditions.

[0004] Therefore, there is an urgent need for a tunnel simulation system that can solve the problems of the existing tunnel simulation systems lacking flexibility and accuracy and being difficult to accurately predict smoke diffusion in complex environments. Summary of the Utility Model

[0005] The utility model aims to provide a tunnel simulation system that can simulate and monitor the smoke diffusion behavior in the open section of the tunnel under different environmental conditions through the flexible combination and adjustment of side plates.

[0006] According to one aspect of the utility model, a tunnel simulation system is provided, including: a tunnel main body, including a first closed section 1, an open section 4, and a second closed section 2 arranged in sequence; a release device 17 located at the bottom of the first closed section 1 for releasing smoke; an axial flow fan 5 located outside the open section 4 for simulating the natural wind outside the tunnel; a monitoring device arranged on the central axis of the tunnel main body for monitoring the smoke and its temperature; and a laser light source 8 located at the end of the tunnel main body for monitoring the movement of the smoke.

[0007] Preferably, both the first closed section 1 and the second closed section 2 include a plurality of detachably connected sub-sections, and each sub-section includes a metal frame, a closed-section bottom plate, a closed-section top plate, and two closed-section side plates, where: the closed-section bottom plate, the closed-section top plate, and one of the closed-section side plates are steel plates 9, and the other closed-section side plate is a visual window 3 made of transparent fireproof glass; fireproof flexible connections are used between the metal frame, the closed-section bottom plate, the closed-section top plate, and the two closed-section side plates.

[0008] Preferably, the closed-section side plate includes: a plurality of horizontal card slots 15, which are arranged at different heights on the inner side of the closed-section side plate and are used for embedding the closed-section top plate.

[0009] Preferably, a liftable bracket 6 is installed below the closed-section bottom plate.

[0010] Preferably, the open section 4 includes a plurality of open-section bottom plates, which have the same width as the closed-section bottom plate and are connected to the closed-section bottom plate through fireproof flexible connections.

[0011] Preferably, the open section 4 further includes a plurality of open-section side plates, which are detachably connected to the open-section bottom plates.

[0012] Preferably, the monitoring device further includes a digital camera 7 placed outside the visual window 3.

[0013] Preferably, the release device 17 is a steel cylinder or an oil pool carrying pollutants. The steel cylinder is arranged in the bottom hollow 10 of the first closed section 1 and is movable along the longitudinal axis of the first closed section 1; the oil pool is movable along the longitudinal axis of the first closed section 1.

[0014] Preferably, universal wheels 13 are arranged below the axial flow fan 5. One end of the rectifying section of the axial flow fan 5 is provided with a fan 12, and the other end is provided with a louvered air outlet 14.

[0015] The utility model discloses a tunnel simulation system, including: a tunnel main body, which includes a first closed section 1, an open section 4, and a second closed section 2 arranged in sequence; a release device 17, which is located at the bottom of the first closed section 1 and is used for releasing smoke; an axial flow fan 5, which is located outside the open section 4 and is used for simulating the natural wind outside the tunnel; a monitoring device, which is arranged on the central axis of the tunnel main body and is used for monitoring the smoke and its temperature; and a laser light source 8, which is located at the end of the tunnel main body and is used for monitoring the movement of the smoke. The utility model can simulate the smoke diffusion behavior of the open section of the tunnel under different environmental conditions through the flexible combination and adjustment of the side plates. In this way, not only can the simulation accuracy of the smoke diffusion in the open section of the tunnel be improved, but also the complex airflow changes under different tunnel designs and environmental conditions can be adapted. Description of the Drawings

[0016] The accompanying drawings described herein are used to provide a further understanding of the present utility model and constitute a part of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0017] Figure 1 is a schematic diagram of the overall structure according to an embodiment of the present utility model;

[0018] Figure 2 is a schematic diagram of the tunnel main body structure according to an embodiment of the present utility model;

[0019] Figure 3 is a schematic diagram of the axial flow fan structure according to an embodiment of the present utility model;

[0020] Figure 4 is a schematic diagram of the louver air outlet structure according to an embodiment of the present utility model;

[0021] Figure 5 is a schematic diagram of the internal structure of the card slot on the side of the tunnel main body according to an embodiment of the present utility model;

[0022] Figure 6 is a front view of the monitoring point layout according to an embodiment of the present utility model; and

[0023] Figure 7 is a top view of the monitoring point layout according to an embodiment of the present utility model.

[0024] In the figure: 1. First closed section; 2. Second closed section; 3. Visual window; 4. Open section; 5. Axial flow fan; 6. Bracket; 7. Digital camera; 8. Laser light source; 9. Steel plate; 10. Bottom hollowing; 11. Rectifying section; 12. Fan; 13. Universal wheel; 14. Louver air outlet; 15. Horizontal card slot; 16. Monitoring point; 17. Release device. Detailed implementation manners

[0025] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0026] Now, the various implementation schemes of the present utility model will be described in detail. Examples of these implementation schemes are shown in the drawings and described as follows. For the purpose of explanation and precise definition in the appended claims, the terms "upper", "lower", "inner" and "outer" are used to describe the features with reference to the positions of the features in the exemplary implementation schemes shown in the drawings.

[0027] An embodiment of the present utility model provides a tunnel simulation system, including: a tunnel main body, including a first closed section 1, an open section 4, and a second closed section 2 arranged in sequence; a release device 17, located at the bottom of the first closed section 1, for releasing smoke; an axial flow fan 5, located outside the open section 4, for simulating the natural wind outside the tunnel; a monitoring device, arranged on the central axis of the tunnel main body, for monitoring the smoke and its temperature; and a laser polarization light source 8, located at the end of the tunnel main body, for monitoring the movement of the smoke.

[0028] Traditional simulation systems cannot flexibly change the simulation conditions. Especially in the open section of the tunnel, they cannot effectively deal with the smoke diffusion situation under different wind speeds, wind directions, and environmental changes. In addition, most of the existing systems lack simulation means for the special structure of the open section of the tunnel, making it difficult to comprehensively reflect the smoke flow law in this area, resulting in low simulation accuracy in complex environments, and thus affecting the prediction of actual working conditions. In the embodiment of the present utility model, the tunnel simulation system can effectively simulate the smoke diffusion situation in different regions by setting a tunnel main body with a first closed section, an open section, and a second closed section. The release device is located at the bottom of the first closed section, precisely releasing smoke, including harmful gases generated in fire accidents, for simulating accident scenarios such as fires, or pollutants such as CO and NOx, for simulating daily working condition driving scenarios; the axial flow fan is located outside the open section, capable of adjusting the wind speed and direction, simulating the influence of natural wind on smoke diffusion. The monitoring device is arranged along the central axis of the tunnel main body, monitoring the smoke and its temperature in real time to ensure a comprehensive grasp of the smoke behavior; the laser polarization light source is located at the end of the tunnel, used to accurately monitor the movement trajectory of the smoke, improving the monitoring accuracy.

[0029] According to the embodiment of the present utility model, both the first closed section 1 and the second closed section 2 include a plurality of detachably connected sub-sections. Each sub-section includes a metal frame, a closed section bottom plate, a closed section top plate, and two closed section side plates, where: the closed section bottom plate, the closed section top plate, and one of the closed section side plates are steel plates 9, and the other closed section side plate is a viewing window 3 made of transparent fireproof glass; fireproof flexible connections are used between the metal frame, the closed section bottom plate, the closed section top plate, and the two closed section side plates.

[0030] The present utility model enables flexible disassembly and assembly of each sub-section through fireproof flexible connections, improving the scalability of the system and the adaptability of the experimental scenarios. In addition, one side plate is made of transparent fireproof glass as a viewing window, significantly improving the observation and monitoring effect of smoke flow during the experiment, facilitating the accurate capture of the dynamic changes in smoke diffusion, and at the same time ensuring good fireproof performance.

[0031] According to an embodiment of the present utility model, the side plate of the closed section includes: a plurality of horizontal card slots 15, which are arranged through at different heights on the inner side of the side plate of the closed section and are used for embedding the top plate of the closed section. By embedding the top plate in the card slots at different heights, the height-width ratios of different tunnels can be simulated.

[0032] In the embodiment of the present utility model, through the design of a plurality of horizontal card slots, the side plate of the closed section can embed the top plate of the closed section at different heights, flexibly simulate the height-width ratios of different tunnels, improve the adaptability of the system while enhancing the assembly efficiency of the system, meet the adjustment requirements of tunnel dimensions under various experimental conditions, and overcome the limitations of simulating the tunnel shape in the prior art.

[0033] According to an embodiment of the present utility model, a liftable bracket 6 is installed below the bottom plate of the closed section, and the slope of the tunnel can be adjusted according to requirements.

[0034] In the embodiment of the present utility model, the design of the liftable bracket makes the adjustment of the tunnel slope more flexible, can simulate the smoke diffusion behavior under various slopes, significantly improves the applicability of the system in diverse experimental scenarios, and overcomes the problem of insufficient simulation ability of the existing system for slope changes.

[0035] According to an embodiment of the present utility model, the open section 4 includes a plurality of bottom plates of the open section, which have the same width as the bottom plate of the closed section and are connected to the bottom plate of the closed section through a fireproof flexible connection.

[0036] According to an embodiment of the present utility model, the open section 4 further includes a plurality of side plates of the open section, which are detachably connected to the bottom plate of the open section. By changing whether the side plates are installed or not, the open sections in different environments can be simulated. When the side plates are not installed on the open section, the open section between mountain tunnel groups can be simulated through the combination with the first closed section and the second closed section; when the side plates are installed on the open section, the open section of an urban tunnel can be simulated through the combination with the first closed section and the second closed section, and open sections of different sizes can be simulated by combining different numbers of bottom plates and side plates.

[0037] In the embodiment of the present utility model, the open section is connected to the bottom plate through a plurality of detachable side plates, and the installation condition of the side plates can be flexibly adjusted according to experimental requirements to simulate the tunnel open section in different environments, enhancing the multi-scenario adaptation ability of the system.

[0038] According to an embodiment of the present utility model, the monitoring device further includes a digital camera 7 placed outside the visual window 3.

[0039] According to an embodiment of the present utility model, the release device 17 is a steel cylinder or an oil sump carrying pollutants. The steel cylinder is arranged at the bottom of the first closed section 1 with a hollowed-out part 10 and is movable along the longitudinal axis of the first closed section 1. The pollutants carried include CO, NOx, etc.; the oil sump is movable along the longitudinal axis of the first closed section 1, and the fuels used are clean energy sources such as n-heptane and methanol.

[0040] In an embodiment of the present utility model, the fuels used are clean energy sources, which have the advantages of being environmentally friendly, pollution-free, burning fully, having a stable fire source, low danger, and no adverse stimulation to experimental personnel.

[0041] According to an embodiment of the present utility model, universal wheels 13 are arranged below the axial flow fan 5. One end of the rectifying section 11 of the axial flow fan 5 is provided with a fan 12, and the other end is provided with a louver air outlet 14. The axial flow fan further includes a rectifying section 11. By changing the frequency of the fan, the wind speed can be changed. The wind generated by the operation of the fan can be integrated through the rectifying section to form a cross-sectional wind with a relatively uniform distribution. The uniform cross-sectional wind finally flows out through the louver air outlet, and the louver air outlet can adjust the wind direction by adjusting the blade angle.

[0042] In an embodiment of the present utility model, by providing the rectifying section 11, universal wheels 13, and louver air outlet 14, the position, the magnitude, and the direction of the wind force of the axial flow fan can be adjusted flexibly and accurately according to experimental requirements to simulate different wind environments.

[0043] The method of the present utility model will be further described in detail below in conjunction with specific embodiments and the drawings.

[0044] Figure 1 It is a schematic diagram of the overall structure according to an embodiment of the present utility model. As Figure 1 shown, the main components of the tunnel simulation system include a tunnel main body (the first closed section, the second closed section, and the open section) and an axial flow fan. During simulation, the tunnel main body is fixed, and the axial flow fan is provided with universal wheels. By flexibly adjusting the position of the axial flow fan and the blade angle of the louver air outlet, the adjustment of the wind direction can be finally achieved, which can meet the requirements under different wind environments. A laser light source is provided at the entrance of the first closed section, which can trace the movement effect of the flue gas. The monitoring device includes a digital camera, which is placed on one side of the viewing window. The open section is composed of several bottom plates and detachable side plates. The bottom plates and the side plates respectively correspond to the width and height of the tunnel closed section, and seamless connection with the main body of the two-side tunnel closed section can be achieved. By combining different numbers of bottom plates and side plates, dimensions such as the spacing of the open section can be changed.

[0045] Figure 2 It is a schematic diagram of the tunnel main body structure according to an embodiment of the present utility model. Figure 5 It is a schematic diagram of the internal structure in the card slot on the side of the tunnel main body according to an embodiment of the present utility model. As Figure 2, 5 As shown in 5 , the bottom plate, top plate and one side of the tunnel main body are made of steel plates, and the other side uses transparent fireproof glass as a viewing window, which can not only meet the requirements for the strength of the tunnel main body, but also facilitate the observation of the diffusion of pollutants in the tunnel and the flow of smoke during a fire. The tunnel main body is composed of multiple horizontally detachable sub-sections, and the length of the tunnel can be flexibly adjusted. A liftable support is provided at the bottom of the tunnel, and the slope of the tunnel can be adjusted according to requirements. Card slots are provided at different heights on the side of the tunnel, and the top plate is embedded in the card slots to change the aspect ratio of the tunnel.

[0046] Figure 3 It is a schematic structural diagram of an axial flow fan according to an embodiment of the present invention. Figure 4 It is a schematic structural diagram of a louver air outlet according to an embodiment of the present invention. As Figure 3 , 4 shown in 4 , the speed of the axial flow fan can be adjusted by frequency conversion to meet the requirements of the present invention for the wind speed. The flexibility of the axial flow fan is reflected in that the entire axial flow fan system can be arbitrarily adjusted horizontally by adjusting the universal wheels. The wind generated by the operation of the fan can form a cross-sectional wind with a relatively uniform distribution after being integrated by the rectification section, and the uniform cross-sectional wind finally flows out through the louver air outlet. The louver air outlet can adjust the wind direction by adjusting the blade angle.

[0047] Figure 6 It is a front view of the measuring point layout of the monitoring device according to an embodiment of the present invention. Figure 7 It is a top view of the measuring point layout of the monitoring device according to an embodiment of the present invention. As Figure 6 , 7 shown in 7 , the bottom of the first closed section is hollowed out, and a fire source or a steel cylinder carrying pollutants can be placed according to needs. A monitoring device is arranged inside the tunnel, and multiple monitoring points are provided, which can flexibly simulate and monitor the diffusion of pollutants during daily ventilation and the spread of smoke during a fire.

[0048] The above embodiments are only examples given to clearly illustrate the present invention, and do not limit the implementation manners of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the following description, and these various changes, modifications, substitutions and deformations derived from the principles and spirits of the present invention still fall within the protection scope of the present invention.

Claims

1. A tunnel simulation system, characterized in that: include: The tunnel body comprises a first closed section (1), an open section (4) and a second closed section (2) which are arranged in sequence; A release device (17), located at the bottom of the first closed section (1), for releasing smoke; An axial flow fan (5), located outside the open section (4), for simulating natural wind outside the tunnel; A monitoring device, arranged on the central axis of the tunnel body, for monitoring the smoke and its temperature; as well as A laser polarization light source (8) is located at the end of the tunnel body and is used to monitor the movement of the smoke.

2. The tunnel simulation system according to claim 1, characterized in that: The first closed section (1) and the second closed section (2) each comprise a plurality of detachably connected sub-sections, each of the sub-sections comprising a metal frame, a closed section bottom plate, a closed section top plate and two closed section side plates, wherein: The bottom plate of the closed section, the top plate of the closed section and one of the side plates of the closed section are steel plates (9), and the other side plate of the closed section is a visual window (3) made of transparent fireproof glass; Fireproof flexible connections are used between the metal frame, the bottom plate of the closed section, the top plate of the closed section and the two side plates of the closed section.

3. The tunnel simulation system according to claim 2, characterized in that: The closed section side plate comprises: a plurality of horizontal slots (15) which are arranged through the closed section side plate at different heights and are used for being embedded in the closed section top plate.

4. The tunnel simulation system according to claim 3, characterized in that: A liftable bracket (6) is installed below the bottom plate of the closed section.

5. The tunnel simulation system according to claim 2, characterized in that: The open section (4) comprises a plurality of open section bottom plates, which have the same width as the closed section bottom plate and are connected to the closed section bottom plate via fireproof flexible connections.

6. The tunnel simulation system according to claim 5, characterized in that: The open section (4) further comprises a plurality of open section side panels which are detachably connected to the open section bottom panel.

7. The tunnel simulation system according to claim 2, characterized in that: The monitoring device also includes a digital camera (7) placed outside the visual window (3).

8. The tunnel simulation system according to any one of claims 1 to 7, characterized in that: The release device (17) is a steel cylinder or oil pool carrying pollutants; The steel cylinder is arranged in the bottom hollow (10) of the first closed section (1) and is movable along the longitudinal axis of the first closed section (1); The oil pool is movable along the longitudinal axis of the first closed section (1).

9. The tunnel simulation system according to any one of claims 1 to 7, characterized in that: A universal wheel (13) is arranged below the axial flow fan (5); a fan (12) is arranged at one end of the rectifying section of the axial flow fan (5), and a louver air outlet (14) is arranged at the other end.

Images